Detachable rim for pneumatic tires.



P. B. ID00LITTLE. DETAHABLE RIM FOB. PNEUMTI TIRES.

APPLICATION 'ILED 00T. 8, 1908.

Patented Feb. 20, 1912.

3 SHEETS-SHEET 1.

P. E. DOOLITTIiE.

DETACHABLB RIM POR PNEUMATIG TIRES. Y APPLICATION FILED OCT. 8, 1908. n* 1,018,238, Patented Feb.'2o,1912,

3 SHEETS-SHBET 2.

P. E. DOOLITTLE.

DETAGHABLE MM FOB PNBUMATIG TIRES.

APPLIUATXQN FILED OCT. 8, 190B.

Betented Feb.2o,1912'.

.We de@ W @e me e e.. ww.

UNITED sTATEs PATENT oEiiioE.v

PERRY ERNEST DOOLITTLE, OF ONTARIO/CANADA, ASSIGNOR, BY'MESNE ASSIGN- MENTS. T DOOLITTLE RIM C0. LTD.

DETACHABLE FOR PNUM-ATIC TIRES.

To all whom it may concernlBe it known that I, PERRY ERNEST 'Doo- Li'rTLE, a subject of the King of Great Britain and Ireland, residing in Ontario, Canada, have invented Improvements in or Relating to Detachable Rims for Pneumatic T ircs, of

' which the following is a specification.

This invention has reference to -means for A' carrying pneumatic tires of the kind coniprising a transversely divided rim in whicbN the base of the outer cover of the tire en -l gages and which is'capable .of being slightly expanded while the tire is carried by it so as tto enable it to be placed in position on the wheel felly and of being contracted by suitable means so as to grip the felly and thus be retained in place thereon, the said riin being so constructed as t-o venable the .tire to beeasily removed therefrom for 'repair or otherwise by being still further contractedlV f Objects of the present. invention are to provide means for expanding and contractv ing the divided rim to enable it to be semovement oit the divided rim upon the wheel Y easy removal of the cover. to one part ofa screw coupling is connected cured to fellies of slightly different sizes without special adpv tinent, and to provide improved means for preventing lateral and ,improved means wherebythe rim when removed can be positively contracted to a still smallerfdiametcr for the purpose of According theretoone end portion 'of the divided rim t which connection may be a detachable one) and theothcr end portion ot' the divided rim. carries in a suitable bracket fixed thereto th'eother'part of the screw coupling andimeans whereby the same can be rotated to expand and contract the rim, the' arrangement being such that the screw .coupling arrangementV lies wit-hin a fixed rim of channel or gutter section which is tixediipon or forms the wheel rim or telly, one side of which is formed with an opening of siifficiel size to enable a key or the like to be applied to the means through which the coupling is actuated. With such an arrangement the divided rims can be tightly contracted on to'wheel rims of slightly vary- Figure l of the accompanying illustrative drawings shows in central longitudinal sectioiia portiontofa wheel rim embodying this invention; ig. la is a detail view to l lug f on the spindle Specification ofLetters Patent. l -Patented Feb 20, 1912I Application filed October 8, 1968.

Serial No. 456,785.

which reference will be hereinafter made. Fig. 2 shows the same in plan. Fig.'3' is a transverse section and Fig.` il. a sectional plan, showing a construction of device adapted to prevent the'divided rim moving late Tally upon the fixed rim. Fig. 3B is a detail view hereinafter referred to. F ig.' 5 shows in elevation'and to a smaller scale a portion of the divided rim fitted with a device forcontracting the divided rim when detached from the wheel to enable the tire to be easily removed or replaced and forcibly expanding the rim in the tire. Fig. 6 is a detail view to which reference will herein- Yafter Abe made. l'

sleeve mounted to rotate but not inove endwise in a bracket b that is fixed by screws c to one end of the divided rim cZ. e-is a screwed spindle that engagesthe sleeve b and is connected to the other end ot' thedivided rim Z Aas by an inwardly extending passing through a hole f1 formed in the rimend.l The sleeve b is formed with aworm'wheel g engaged by a worm spin dlcj 7iV mounted transversely in the bracket l). which is provided with suitable bearings for the sleeve a. and worm spindle Iiy and 'which is conveniently formed in halves as shown, screws 7n connecting the Ytwo. halves together.' v1 is a fiber washer forming a thrust bearing between the one end ofthe bracket o and the adjacent closed end of the sleeve (i, which latter nicely lits the open end of the bracket and so prevents the escape of grease with which the spaces withinthe bracket are'illed. a1 is a' hole through which 'grease can pass from the sleeve a.

t willbe seen that the coupling device lies as far as practicable within the channel or gutter ofthe rim m which is fixed upon the wheel telly n, an opening o, Fig. G, being formed in one side of the felly to enable an operating key to be fitted-to a square hole in -the spindle il. This opening may,` as shown,

be normally closed by a cover p. to prevent the cntranceof dirt.

"A rubber or 'other stripi', Fig.` l, may be arranged to cover the joint of the divided rim.' such 'strip mai1 be fixed at one end to the bracketv 7) or to the end portion Yof the rim d adjacent to the bracket.

To prevent the divided rim d moving lat- @muy uponthe 'fixed rim fmi, there Vare ica 'l-inounted. on a radial pivot r, Fi `s. and 4, fextending from the inside of te 'divided s rimd a pair of plates s arranged one upon the other and of sue Width as to-"be capable, While the divided 'm ci is being applied vto or Withdrawn Vfrom the fixed run m, of `passing through a slot t in a side wall of the fixed rim fm and of thenbeing opened out fan-Wise, Fig. 4, so as to engage with `the said slotted' side Wall at oppositesides of the slot r and preventreturn movement 'of the rim. Each of the plates may oonl venientlyLbe, as shown, of lsomewhat trian# lar shape witha rounded apex u which ears against the unslotted side wall'of the hired rinln m, and with an 'out-Wand projee opposite directions and 'any ten iso esl

tion w tiorigjv extending from near themiddle of its base',``vghieli, on' one side Yof the projection-yo, is curved at w to a radius struck from the eenter'offthe pivot fr such that when the di vided rim l is pushed home on lthe. felly the platess eanxbe turnedabout their common' pivot r and the .curved portions fw will then engage wit-h the inside of the side wall of the iixed rim m beyond the slot t.' The plates are reversely arranged so that 'they are turned into-and out of enagement in deney of the divided rim' to move laterally will not tend to close the plates together.

y is a spring located in recesses a formed `in the .plates s tending to open out the plates into their locking positions. l hen the rim d 1s being pushed home the inner part of the plates s aving entered the slot't the sides ofthe plates will bear against the sideso theA slot and the plates elosed up hntil their curved portions w are Within the vitallsof the slot `when the spring y will ag'an open out the pla-tes and ythus auto matiaally lock the rim d in position. The

platesnre of such thickness that, in conjunc-fl i rojctions o, which may be h the {urned down m opposite directions,. they g, so

lose the slot-ft in. the fixed rim against the entry of dirt when the plates are opened out.

To` enable the-divided rim to be removed,

the shrew coupling is actuated to expand the' rim ,lthefprojections 'v are pressed toward one anothervas by a spring tool s1 ."Fig. 4, `in order to ginove the plates e, against the ac-V tion of the spring y, into their closed position when they `are drawn through the slot t as the rim dis Withdrawnf'rom the rim iii. The portion m of the base of each plate forms a stop which by coming against the sides of tl1e-slot -t` in the fixed rim limits the movement ofthe plate so that when the `projeetions n are held together theplates s must be in positionl forM-rerrloval.I

In some eases tliekplates s een be pressed together by a springivasher s, Fig. 3, so"

that they will not be liable to accidental movement from their locking position. .To

withdraw' the plates in such eonstruetion,

" VTo prevent 4the onegend,

just over the inner edge of or the like toward eac otheri y 1, l

Ad1 isa layer of ber, vulcaniterraw hide or other yieldableV resistin mat`eral `inter-` the .projections are t`a pedyvviith a hammer osed Vbetween the'. divide `and-Athe' xed rim m. 1 d,..F1g. 3, 1s a strip 'of similar,`

material placed between the'innerj lates-V andthe'-txed vrim m to form a seat ofthe! lateral movement reventing device and piti..-y

vent vibration an the plates .s thereof being moved until theiim 4is slaekened. `e" ande*A` f are respectively a washer and liningof ber or other nonrusting material width "will prevent Athe plates-bec'oming bound by .1:

To enable the tire'to be readily `'1feniovltd from the rim d after such rim isremved from the fixedv riln 'm a contract'in device tor the rmycl is provided,lsuch :as s ownin Fig. 5 and comprising a member 1 one end (lf which is provided with a in 10v radaptedto be insertedk through a ho e2 formedfin'a block 3 ixedto one endv of the divided' rim d.- Anther memberl' mounted to slide-teleseopi'cally on the member 1 is formed-.With

l an 'arm 14 which is furnished with a pinfl adapted to be inserted through a hole.

formed in a block/t fixed to theiotlier'end.

. of.. thedivided rim. i

y I16 is a spindle mounted to rotate but 'noti4 move endvvise in the member 1*, screwed at its inner end into a nut 17 carried by the ,member 1, and furnished with an operating` handle rat its outer end.

against the other Yend portiuon and-` against the bracket "b as it moves inwardlyuponeonr traction of the rim, a guide b can' be laced over the' bracket b as shown in dott lines in Fig. 5, the end ofthe gpde extending y t e adiiacent rim end# and the 'whole being heldin p key inserted into the spindle h.

6, Figs. 1 and 1%, is a hook that is pivoted i to a pin 7 fixed to the rim d andthe free end of which is adapted to engage the lug fof ace'uby the portiif'atching llos the spindle e and thereby prevent disengagement of such lug from the rim. The

block 3 is so arranged inrelation t the hook 6 thatwhenthe hook 6; engages the lug f the hook extends across 'the hole in the block 3 so that the member 1 ofthe contracting de-` vice can not be connected. to the block 3 un til the hook 6 is disengaged fromthe lug f.

lllhen disengaged the hook prevents the di` i vided rim being placed' in positionon the fixed rim thereby insuring the lug f being locked in place tion for usei iVVha-t-l claim is :---v -f Y l 1.1,n a wheel for pneumatietres, a xed riniwitlvexpandmg and contracting means comprising a screw coupling having a hook ,formed at one end engaging one end'of the divided rim and releasable therefrom' by before the rim d is 1n pos1- rim, :a bracket fixed near one end ofi-said di- .sleeve adapted to vided rim, a worm wheel mounted to rotate; but1 not move endwise in said bracket; -a Worm gearing into said worm wheel, a worm spindle for said worm mounted transversely' in said bracket, a screwed sleeve mounted in said bracket and on which said worin wheel is fixed, a screwed spindle Workingr in said encrage the other end of said divided rim, said bracket being mainly located within said fixed rim, and means whereby said worm spindle can be rotated from outside said fixed rim.

3. In a Wheel for pneumatic tires, a fixed rim of channel or gutter section formed with a slot in one of its side walls; a divided rim; and means for Y. preventing said divided rim moving laterally upon said fixed rim comprising a part carried by said divided rim and movable relativefthereto, which part is capable of passing through the slot in the side wall of said fixed rim while the divided rim is being withdrawn from or-applied to the Wheel and which is adapted, when said divided rim is on saidjfixed rim, to move to engage the wall of said fixed rim adjacent, to the slot.

4. In a Wheel for; neumat'ic tires, a fixed lrim of channel ,or- Uutterisection formed ,ranged one abovefthe A rim; f--a "detachable rim;

i 'faiiiwise theype-ngage with with a4 slot in one-pf its side walls; a divided rim; aradia'l pivot extending from l a pair of plates mounted on said radial pivot, ar-

4 other and of' such width. that when opened out fan-Wise they engage with: thel slotted side/Wall of saidf fixed rimliit opposite sides'otthe slot, while .when moved together, they are capable of beinglpassedjor 5. I n a wheel the combination of a fixed #a spring' actuated` latch' carried by said det@ hable rim retract` able: by contact. with t e fixed rim; and means on the fixed rin/i adapted to be eiagaged bythe latch to hold the detachablerim against displacement when the latter has 4been slipped into place on the fixed rim. 6. In a Wheel for pneumatic tires, a fixed rim with a slotted side wall, a divided rim, .a radial pivot extending from the 'inside of l-divided rim, a pair of plates n'i'ounted aid. pivot arranged one above the ther d' of;I such ividthtl'iat when opened out the slotted wall of Withdrawnl through th slot.

'Saidtjxed :run at opposite sides of said slot,

and a spring tending to open said plates out fanwse. y

Y 7. In a wheel for pneumatic tires, a fixed rim with a slotted side wall, a divided rim, a radial pivot extending from the inside of said divided rim, a pair of plates mounted on said Ypivot arranged one above the other and ot'suchavidth that when opened out fanwise they engage with the slotted wall of said filxed rim at opposite sides of said slot, each said plate being formed with a recess onritsface adjacent to the other plate, and a spring ocated Within the lrecesses of said plates tending to open said plates out fanwise.-j

8. In a wheel for pneumatic tires, a fixed rim, with a slotted sidewall, a divided riin, a radial pivot extending from the inside of said divided rim, a pair of plates mounted on said pivot arranged one above the'other and of such width that when opened out fanwise they engage with the slotted wall of. said fixed rim at opposite sides of said slot, lugs on said plates extending through the slotted wall of said fixed rim adapted to be engaged by a spring tool whereby said plates can be moved tending to open said plates outfanwise. y

9. In a wheel for pneumatic tires, a fixed rim, a divided rim, expanding and contract-- ing lmeans for said divided rim comprising a coupling one part of which'Lis/connected to Y one end portion of said divided rim and t-he other part of which is vconnected to the other end portion of said divided rim, a perforated block fixed to said divided rim near each end thereof, said blocks being adapted to be coupled to a rim contracting tool when said divided rim is removed from said fixedrim, by pins passed through the holes therein, and locking means adapted to prevent disengagement Jof said coupling .from one end of said divided rim and to prevent the engagement of one of said blocks with said tool u ntil said coupling part isy released from said locking means.

10. In a wheel for pneumatic tires, a fixed rim, a divided rim, expanding and contracting means for said divided rim comprising a coupling one partpf which is connected to one end, portion of said divided rim and the other part of 'which is connected to the other." end portion of said divided rim, a perforated block fixed to said divided rim nearl each end thereof, said blocks being adapted to be coupled to a rim contracting tool when said divided rim is removed from said fixed rim, by pins 'passedftwhrough the holes therein, a radial pin extending inwardly from said divided rim, and a hook mounted to turn on said pin and adapted to engage one part ot said couplingwhen in engagement with the divided rim, saidpin, one of said .blocks and saidcoupling part engaged by said hook being so arranged that holes therein,

"ing means for` said when Said hook is in engagenielt with said coupling part it extends across the 11019,.'` of Said block. 'A L' lli. In ay Wheel or'pneumatic tires, affixed rim, a divided rim, expanding' and contifai'tf divided rimj comprigiiig e coupling one part of which is connected to one end portion of said divided rim and the other' part of which is connected to the other .end portion of seid. divided rim, a

perforated. block iiXedt-o fsaid divided rim licei' eachl end thereof, said blocks being-`=`l adopted to be coupled to 'tool when seid divided rim is lremoved from seid fixed rim, by pins -pessed hroligh ihe ay radial pin extending in-` wardly from said divided mim, and 'e hook' mounted to turn on said pin-and' adaptedto 011e `of said blocks thai, when said Ahook .said con engage @one parl; ofgsaid 'coupling when in engagement with the divided rim, said pin, and said coupling part engaged by said hook beingy so arranged is in engagement with Iing' part it extends across the hole of said lock, and said hook being adopted 4vwhen disengaged from said coupling to obstruct the application of said divided rim to said fixed rim Signed M146 Llneolns Inn Fields, London, Eng and, this thirtiethv day of September 1908` 4PERRY ERNEST DooLITTLE.

Witnesses: l ARTHUR W'oosNAM, YVILLIAM PRINGL'E. 

